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  • Implementing Temperature-Based Variable Fan Speed Control in NLX Power Supplies
    consisting of two pulses per fan rotation. 2. FanC is an input to the NLX-compliant power supply used by the motherboard to regulate fan speed and to shut the fan down. FanC is a 0V to 12V analog signal. Implementing Temperature-Based Variable Fan Speed Controller in NLX Power Supplies M
  • Resistor Databook
    : To control the charge or discharge current and stabilize load. ? Motor: To control the rotation speed, either steady or variable. Re: Current sensor When loading current is low, current flows in direction 1. When loading current is increased to a certain level and turns Tr2 on, current flows
  • Sensorless BLDC Control with Back-EMF Filtering Using a Majority Function
    on the Equation 4, the only variable term is the. near zero speed is not required. Provided the. rotor angular speed. Therefore, the BEMF is. speed is greater than zero, there are only two. proportional to the rotor speed; as the speed increases. positions per electrical cycle when the BEMF of a. the BEMF
  • D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms
    ) for telephone dialing, controlling the speed of a motor, generating sound and complex waveforms, and generating variable voltages in a power supply. D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms. AN655. D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF
  • PIN Diode Basics
    A PIN diode is essentially a variable resistor. To determine the value. of this resistance, consider a volume comparable to a typical PIN. diode chip, say 20 mil diameter and 2 mils thick. This chip has a. DC resistance of about 0.75 M O. Note: 1 mil = 0.001 inches. In real diodes
  • Designing Operational Amplifier Oscillator Circuits For Sensor Applications
    and determine the influence of each component on the frequency of oscillation. The procedure will be demonstrated by analyzing two state-variable RC op-amp oscillator circuits. Designing Operational Amplifier Oscillator Circuits for Sensor Applications M. AN866. Designing Operational Amplifier
  • Testing Teccor Semiconductor Devices Using Curve Tracers (.pdf)
    electronics such as power supplies, amplifiers, and variable input and output functions that allow the user to display the operating characteristics of a device in an easy-to-read, standard graph form. Operation of Tektronix CTs is simple and straightforward and easily taught to non-technical
  • Speed Control of 3-Phase Induction Motor Using PIC18 Microcontrollers
    at its rated speed. However, many applications need variable speed operations. For example, a washing machine may use different speeds for each wash cycle. Historically, mechanical gear systems were used to obtain variable speed. Recently, electronic power and control systems have matured to allow

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